What size are these bulbs?

These LED replacement bulbs are 28mm, designed to fit directly in place of factory 28mm festoon bulbs. They are commonly found in vanity mirror lights in many vehicles.

How bright are these bulbs?

The SMF2 LED provides 24 lumens of measured output, about double the total light compared to your original 28mm-sized bulb. Diode Dynamics tests the true output in-house and provides real numbers to compare.

How long will these bulbs last?

These bulbs are built with constant-current circuitry, along with transient suppression. This design means the bulb will last for years, not months, with no flickering or failure. They also come with a three-year replacement warranty.

Diode Dynamics

Diode Dynamics 28mm SMF2 LED Bulb - Amber Set of 4

Name: Diode Dynamics 28mm SMF2 LED Bulb - Amber Set of 4
Brand: Diode Dynamics
Price: 24.52 USD
Availability: InStock

$24.52

Direct replacement for factory 28mm festoon bulbs. Adds a modern LED appearance with more light output.

Key Features

Direct replacement — fits factory 28mm festoon bulb sockets
Modern LED appearance — upgrades the factory yellowish incandescent bulb
Plug and play installation — simple install
Embedded load resistor and implanted diode — for strong reliability
Durable metal terminals — fits snugly in the socket
24 lumens of measured output — about double the total light compared to your original 28mm-sized bulb

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Will this fit your vehicle?

Compatible with 193 vehicles

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Product Details

The 28mm SMF2 LED bulb is a direct replacement for any 28mm-size bulb commonly found in vanity mirror lights in many vehicles. The SMF2 upgrades the factory yellowish incandescent bulb to a more modern LED appearance with increased output.